Lamp.



E. A. HAWTHORNE..

LAMP.

APPLICATION FILED FEB. I8, |915.

Patented Dec. 4, 1917.

einen ELLSWOB'TH A. HAWTHORNE, OF BRIDGEPORT, CONNECTICUT.

LAMP.

imacat I Toall 4t 'may concern.'

' Beit known that ll, ELLswoirrH A. HAW- THORNE, a citizen of the UnitedStates, residing at Bridgeport, in the county of Fairlield and State ofConnecticut, have invented an llmprovement in Lamps, of which thefollowing description, in connection with the accompanying drawings, isa specification, like characters on the drawings representing likeparts.

This invention relates to lamps and amongother objects aims to provide astrong and simple lampl construction the parts o which may be readilyassembled and adjusted.

The character of the invention may be best understood by reference tothe following description of an illustrative embodiment thereof shown inthe accompanying drawing, wherein Figure 1 is a vertical section throughan illustrative lamp shown herein as embodying the invention. j

Fig. 2 is a transverse section taken on line 2 2 ofrig. 1. i

Fig. 3 is a horizontal section taken on line 3--3 of Fig. 1.

Fig. 4 is a transverse section taken on .line 4-4 of Fig. 1, and

Y Fig. 5 is a transverse section taken on line 5-5 ofFig. 1.

Referring to the drawing, the illustrative lamp shown therein asembodying the invention comprises a reflector casing 1, having a angeformed to present a shoulder 3 and a bead 5. A lass 7 is seated on saidshoulder and is hel in place by a ring 9 adapted' to be snapped ontosaid bead.

`At the rear ofthe reflector casing 1 is an aperture through whichprojects a neck 11 bracket comprising a band 15 embracing said neck andhaving its edges confined between. said casing and a flange 17projecting outwardjfroin said neck. rllheband 1s continued to presentopposed legs .19 having registering apertures 21 for receiving a boltwhereby the'lamp may be mounted wherever desired. To 'secure the band tosaid neck a rivet 23 is entered through therleg's thereof adjacent saidneck.

Specication of Letters Patent.

Patented Deco 4, 1217.

Application iled February 18, 1915. Serial No. 8,996.

V The neck described serves not only as an.

element for securing the reflector casing 1 to the backet but also toaccommodate aV lamp. To this end the casingis provided with a sleevelikemember or socket'25 having a sliding frictional fit in said neck andpreferably is substantially longer vthan said neck. vIn one end of themember 25 is fixed an inner bayonetsocket 27, in which is inserted thebase or plug 26 of a-usual electric lamp bulb 29 provided with a pair ofcontact plates 28 separated by a usual liller 30;

'llhe plug which is of the .wellknown Ediswan type is locked to saidslee've by diametrically opposed pins'31 enteredinto Il..-

shaped slots 33. The opposite'end of the sleeve socket is adapted toreceive the connector plug 35 also of the wellknown Ediswan type,carrying wires 37 and usual ing the slots 43,there"i. r1`his ferrule45,' as seen-in Fig, 1, will coperate with the' flange 17 and act asastop to preventitoo great inward adjustment of the lsleeve 25.l

1t will now be apparent that the springpressed terminals 39 tend topress the connector plug 35 and the bulb plug or base 26 axially inopposite directions, and thus lock said plugs in theirrespective'bayonet sockets. By simply turning the connector plug 35through the angular distance permitted by the travel of the pins 41 inthe circumferential/'portions of the lV-shaped slots 43, thespring-pressed terminals 39 may be moved into and out of engagement withthe contacts l28 of the 'lampbulb 29,v the connector plug thus`constituting a ccrrvenient switch directlyy engaging the-lamp `base andserving to complete and interruptthe lamp circui y When iti-'is desiredto focus the lamp c,the wire plug may be grasped by the hand Vto slidethe'sleeve socket axially relatively to the neck. It may-be secured inits different ment with the sleeve socket. Duringl this adjustment boththe bulb plug and wire carrying plug are locked to the sleeve socket sothat their relations may be maintained throughout the adjustment. Thesocket is slid straight axially without the necessity of any rotativeadjustment thereof such as would be likely to disturb the lockingconnection of the wire plug with the socket or break the connection ofthe terminals 39 with the bulb plug contacts. Consequently the lamp ismaintained lighted throughout the adjustment and a veryl ready andperfect focusing of the lamp may be attained. Furthermore, by theelimination of rotation of lthe plug there is no necessity for twistingor untwisting the wires or disturbing their a v proper relation.

By the lamp described there is provided extremely cheap, strong andsimple con- ",asti'uction, the elements of which may be quickly andreadily assembled and adjusted as des1red.

Having described one embodiment of the invention without limiting thesame thereto, what I cla-im as new and desire to secure by LettersPatent, is:

1. A lamp comprisin a reflector casin having an aperture int e rear endthereo a glass for said casing, a neck in said aperture having a flange,and a collar engaging said casing, a bracket band embracing said neck,and confined between said'casing and said flange, a sleeve socketaxially adjustable in. said neck, a set screw for locking said socket indifferent positions of adjustment, a lamp having a plug in one end ofsaid socket, a wire plug in the opposite end of said socket and meansfor locking said plugs insaid sockets.

2\.A lamp comprising a reflector casing having an aperture therein, aglass for said casing, a neck having a rigid flange immovable axiallythereof, and a collar for engagement with the inner face of said casing,a bracket band embracing said neck between said casing and said flangeand means carried by said band to secure said casing and band againstrelative turning movement.

3. A lamp comprising a reflector casing having an aperture therein, aneck projecting outward from said aperture, a bracket band embracing theexterior surface of said neck, a socket having a sliding t in the innersurface of said neck, a bulb plug in one endof said socket, a wire plugin the opposite end of said socket and means for lhckjng said plugsinsaid socket.

4. The combination of'a casing provided with axially-alined bayonetsockets open at their opposite ends for the admission of a pair ofelectrical conducting devices, each having inter-locking bayonetconnection with its respective bayonet socket, and a resilient contactmember carried by one of said conducting devices whereby said devicesare locked in position in said sockets and an electrical connection isestablished between them.

5. In an electric lamp, the combination of a casing having a reflector,said casing being provided with a tubular socket adapted to form asupport for an electrical connector and a second tubular socket in`alinemei-t with the first socket and adapted to form a support for alamp projecting within .said reflector, a connector projecting outwardlyfrom the first-mentioned socket and provided with resilient .contactmeans on its inner end, and a lamp seated within said inner socket andprovided with a Contact lnenabrr on its outer base portion adapted toengage said resilient contact means.

6. In an electric lamp, the combination of a bowl-shaped casing havingan inner bowlshaped reflector, said casing being provided with twotubular socket portions coaxially arranged, an electric plug connectordetachably supported in the outer socket portion, a lamp bulb providedwith a base detaehabl v supported within said reflector extendingthrough the inner socket portion and directly engaging said connector.

7. In an electric lamp, the combination of a bowl-shaped casin having aninner bowlshaped reflector, said casing being provided at its base witha tubular extension projecting from and coaxial with said reflector andan outwardly projecting tubular rear extension coaxial with said firstextension, an electrical connector plug detachably supported in saidouter extension, a connection extending through said plug and providedat its inner end with a resilient contact, a lamp bulb within saidreflectorand provided with a base extending through said inner tubularextension, and a contact plate on said base adapted directly to engagesaid resilient contact member.

8. In an electric lamp, the combination of a bowl-shaped casing havingan inner reflector, said casing being provided with inner and outertubular sockets substantially coaxial one with the other, said outersocket lbeing provided with T-shaped slots each open at its outer end, acylindrical plug provided with diametrically opposed pins projectingtherefrom and adapted to enter said T-shaped slots, respectively, aresilient eccentrically disposed contact member on the inner end of saidplug and provided with an electrical connection extending through saidplug, an electric bulb contained within said reflector and provided witha base supported within said inner socket, and a contact eccentricallymounted on the rear end of said base adapted to engage said resilientcontact member, the ends of the lateral arms of said T-shaped slot beingsuitably spaced around the circum- Lacasse socket, and a resilientconnection interposed between the adjacent ends of said Edi- Aeo swanbases whereby the lamp and connector are locked in position.

10. In an electric lamp, the combination of a casing having an innerreflector, said casing being provided with inner and outer bayonetsockets coaxially disposed, a lamp bulb within said reiector andprovided with an Ediswan base adapted to be supported Within said innersocket, an outer connector provided with an Ediswan base extending andsupported Within said outer socket, a. resilient contact plunger, and anelectric conductor extending from said plunger outwardly through saidconnector.

11. The combination with a casing, of receiving means carried therebyfor supporting a pair of unitary electrical conducting devices inaxially alined relation, each of said devices having interlockingbayonetjoint connection with said means, one of said conducting devicescomprising a resilient contact member adapted to engage the other forestablishing an electric connection between them and coperating Withsaid bayonet joints to lock said devices in said means.

12. In an electric lamp a casing, a tubular element associatedtherewith, a bulb having a base received in one end of said element, aconnection plug having conducting wires secured thereto received in theother end, said plug comprising a resilient contact member vfor contactwith said base and being adapted for rotation in said member to make orbreak the connection.

13. In an electric lamp a casing, a tubular element associatedtherewitlna bulb having a base received in one end of saidelement, a`connection plug for insertion in the other end of said member havingconducting Wires secured thereto and also comprisin' a resilient contactmember to engage' said base, said plug and member having a coperatingbayonet slot and pin for locking them together.

'14. In a lamp a casing havin inner and outer baynonet sockets, a lampbu b having a base received in said inner socket and having a pin tointerlock with said socket, a plug received in said outer socket havinga pin to interlock therewith and also havlng a resilient contact membersecured thereto arranged to bear on said base and exert a spacing thruston plug and base when they are seated in their respective sockets.

15. In a lamp a casinrr having inner" and outer sockets, a lamp 'bulbhaving a base received in said inner socket, a connection memberrotatably received in said` `outer socket and having provision forinterlockf ing therewith when rotated, said member comprising aresilient Contact device adapted when the member is positioned directlyto contact with said'base and exert a spacing thrust on base and memberfirmly to seat the same. I-

16. A lighting apparatus comprising, in combination, an electric lampbulb having a base provided with a terminal, a conductmg cable.resilient contact means normally electrically connecting said cable Withsaid terminal to establish the lamp circuit, a rotatable and axiallymovable plug to which said cable and said contact means arel Yse-L curedand b v which said contact means ma be moved into and out of contactwith said terminal. means forming a socket in Which said lamp base isnormally held by said resilient contact means, means forming a socket inwhich said plug is normally held by said resilient contact means, thelastmentioued socket-forming means Ahaving provision to enforce turningmovement of said plugl to engage and disengage said contact means withsaid lamp terminal and means forming a housing for said lamp and a.mounting for said parts. v

17. A lighting apparatus comprising, in combination, an electric lampbulb having a base provided with a terminal, a conducting cable.resilient contact means normally electrically connecting said cable Withsaid terminal to vestablish the lamp circuit, a rotatable and axiallymovable plug to which said cable and said contact means are secured andby which said contact-means may be moved into and out of contact Withsaid terminal, means forming a socket inwhich said lamp base is normallyheld byY said rresilient contact means, means forming a socket in whichsaid plug is normally held mounted in said neck; a bulb said member,said member having bayonet slots in its rear end, @connecting plugenname to this specification, in the presence terng 'staid membelr andeigaing sad lot of two subscribing witnesses. am a erru e inc osino t es otte en o the member and adzptsed to abut the neck ELLSWORTH A'HAWTHORNE' to limit inward mc vement of the socket Witnesses: A membertherein. E. HORACE HAWTHORNE,

n testimony whereof, I have signed my ANNA A. KAIEROSKY.

